Patents by Inventor Sushumna Iruvanti

Sushumna Iruvanti has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10381276
    Abstract: A laminate includes a plurality of buildup layers disposed on a core and a plurality of unit cells defined in the buildup layers. Each unit cell includes: at least one test via that passes through at least two of the buildup layers and that is electrically connected to testing locations on a probe accessible location of the laminate; and two or more dummy vias disposed in the unit cell. The dummy vias are arranged in the unit cell at one of a plurality of distances from the test via.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: August 13, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Sushumna Iruvanti, Shidong Li, Marek A. Orlowski, David L. Questad, Tuhin Sinha, Krishna R. Tunga, Thomas A. Wassick, Randall J. Werner, Jeffrey A. Zitz
  • Patent number: 10332813
    Abstract: An electronic package includes a carrier and a semiconductor chip. In a first aspect an interleaved seal band includes a pattern of a first type of seal band material and a second type of seal band material.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: June 25, 2019
    Assignee: International Business Machines Corporation
    Inventors: Sushumna Iruvanti, Shidong Li, Kamal K. Sikka, Hilton T. Toy, Jeffrey A. Zitz
  • Patent number: 10249548
    Abstract: A laminate includes a plurality of buildup layers disposed on a core and a plurality of unit cells defined in the buildup layers. Each unit cell includes: at least one test via that passes through at least two of the buildup layers and that is electrically connected to testing locations on a probe accessible location of the laminate; and two or more dummy vias disposed in the unit cell. The dummy vias are arranged in the unit cell at one of a plurality of distances from the test via.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: April 2, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Sushumna Iruvanti, Shidong Li, Marek A. Orlowski, David L. Questad, Tuhin Sinha, Krishna R. Tunga, Thomas A. Wassick, Randall J. Werner, Jeffrey A. Zitz
  • Patent number: 10083886
    Abstract: In yet another aspect the electronic package further includes a frame concentric with the chip. The lid is attached to the frame with a solder, epoxy or elastomer and placed on the chip with a thermal interface material. The seal band material is dispensed on the chip carrier and the frame is then moved towards the chip carrier allowing a minimum seal band thickness.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: September 25, 2018
    Assignee: International Business Machines Corporation
    Inventors: Sushumna Iruvanti, Shidong Li, Kamal K. Sikka, Hilton T. Toy, Jeffrey A. Zitz
  • Publication number: 20180233381
    Abstract: An electronic package includes a carrier and a semiconductor chip. In a first aspect, a lid is attached to the chip and subsequently the gap between the lid and the carrier is filled by a seal band that includes seal band material and a plurality of shim members. In another aspect, an interleaved seal band includes a pattern of a first type of seal band material and a second type of seal band material. In another aspect, the lid includes a plurality of surfaces at different topographies to reduce the thickness of the seal band between the topographic lid and the carrier. In yet another aspect the electronic package further includes a frame concentric with the chip. The lid is attached to the frame with a solder, epoxy or elastomer and placed on the chip with a thermal interface material. The seal band material is dispensed on the chip carrier and the frame is then moved towards the chip carrier allowing a minimum seal band thickness.
    Type: Application
    Filed: April 12, 2018
    Publication date: August 16, 2018
    Inventors: Sushumna Iruvanti, Shidong Li, Kamal K. Sikka, Hilton T. Toy, Jeffrey A. Zitz
  • Patent number: 10049896
    Abstract: An electronic package includes a carrier and a semiconductor chip. In a first aspect a lid is attached to the chip and subsequently the gap between the lid and the carrier is filled by a seal band that includes seal band material and a plurality of shim members. In another aspect, an interleaved seal band includes a pattern of a first type of seal band material and a second type of seal band material. In another aspect, the lid includes a plurality of surfaces at different topographies to reduce the thickness of the seal band between the topographic lid and the carrier. In yet another aspect the electronic package further includes a frame concentric with the chip. The lid is attached to the frame with a solder, epoxy or elastomer and placed on the chip with a thermal interface material. The seal band material is dispensed on the chip carrier and the frame is then moved towards the chip carrier allowing a minimum seal band thickness.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: August 14, 2018
    Assignee: International Business Machines Corporation
    Inventors: Sushumna Iruvanti, Shidong Li, Kamal K. Sikka, Hilton T. Toy, Jeffrey A. Zitz
  • Patent number: 9947603
    Abstract: An electronic package includes a carrier and a semiconductor chip. In a first aspect a lid is attached to the chip and subsequently the gap between the lid and the carrier is filled by a seal band that includes seal band material and a plurality of shim members. In another aspect, an interleaved seal band includes a pattern of a first type of seal band material and a second type of seal band material. In another aspect, the lid includes a plurality of surfaces at different topographies to reduce the thickness of the seal band between the topographic lid and the carrier. In yet another aspect the electronic package further includes a frame concentric with the chip. The lid is attached to the frame with a solder, epoxy or elastomer and placed on the chip with a thermal interface material. The seal band material is dispensed on the chip carrier and the frame is then moved towards the chip carrier allowing a minimum seal band thickness.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: April 17, 2018
    Assignee: International Business Machines Corporation
    Inventors: Sushumna Iruvanti, Shidong Li, Kamal K. Sikka, Hilton T. Toy, Jeffrey A. Zitz
  • Publication number: 20180076101
    Abstract: A laminate includes a plurality of buildup layers disposed on a core and a plurality of unit cells defined in the buildup layers. Each unit cell includes: at least one test via that passes through at least two of the buildup layers and that is electrically connected to testing locations on a probe accessible location of the laminate; and two or more dummy vias disposed in the unit cell. The dummy vias are arranged in the unit cell at one of a plurality of distances from the test via.
    Type: Application
    Filed: November 15, 2017
    Publication date: March 15, 2018
    Inventors: Sushumna Iruvanti, Shidong Li, Marek A. Orlowski, David L. Questad, Tuhin Sinha, Krishna R. Tunga, Thomas A. Wassick, Randall J. Werner, Jeffrey A. Zitz
  • Publication number: 20180068917
    Abstract: In yet another aspect the electronic package further includes a frame concentric with the chip. The lid is attached to the frame with a solder, epoxy or elastomer and placed on the chip with a thermal interface material. The seal band material is dispensed on the chip carrier and the frame is then moved towards the chip carrier allowing a minimum seal band thickness.
    Type: Application
    Filed: November 13, 2017
    Publication date: March 8, 2018
    Inventors: Sushumna Iruvanti, Shidong Li, Kamal K. Sikka, Hilton T. Toy, Jeffrey A. Zitz
  • Publication number: 20180068916
    Abstract: An electronic package includes a carrier and a semiconductor chip. In a first aspect an interleaved seal band includes a pattern of a first type of seal band material and a second type of seal band material.
    Type: Application
    Filed: November 13, 2017
    Publication date: March 8, 2018
    Inventors: Sushumna Iruvanti, Shidong Li, Kamal K. Sikka, Hilton T. Toy, Jeffrey A. Zitz
  • Publication number: 20170178982
    Abstract: A laminate includes a plurality of buildup layers disposed on a core and a plurality of unit cells defined in the buildup layers. Each unit cell includes: at least one test via that passes through at least two of the buildup layers and that is electrically connected to testing locations on a probe accessible location of the laminate; and two or more dummy vias disposed in the unit cell. The dummy vias are arranged in the unit cell at one of a plurality of distances from the test via.
    Type: Application
    Filed: December 17, 2015
    Publication date: June 22, 2017
    Inventors: Sushumna Iruvanti, Shidong Li, Marek A. Orlowski, David L. Questad, Tuhin Sinha, Krishna R. Tunga, Thomas A. Wassick, Randall J. Werner, Jeffrey A. Zitz
  • Publication number: 20170170030
    Abstract: An electronic package includes a carrier and a semiconductor chip. In a first aspect a lid is attached to the chip and subsequently the gap between the lid and the carrier is filled by a seal band that includes seal band material and a plurality of shim members. In another aspect, an interleaved seal band includes a pattern of a first type of seal band material and a second type of seal band material. In another aspect, the lid includes a plurality of surfaces at different topographies to reduce the thickness of the seal band between the topographic lid and the carrier. In yet another aspect the electronic package further includes a frame concentric with the chip. The lid is attached to the frame with a solder, epoxy or elastomer and placed on the chip with a thermal interface material. The seal band material is dispensed on the chip carrier and the frame is then moved towards the chip carrier allowing a minimum seal band thickness.
    Type: Application
    Filed: December 9, 2015
    Publication date: June 15, 2017
    Inventors: Sushumna Iruvanti, Shidong Li, Kamal K. Sikka, Hilton T. Toy, Jeffrey A. Zitz
  • Publication number: 20170170086
    Abstract: An electronic package includes a carrier and a semiconductor chip. In a first aspect a lid is attached to the chip and subsequently the gap between the lid and the carrier is filled by a seal band that includes seal band material and a plurality of shim members. In another aspect, an interleaved seal band includes a pattern of a first type of seal band material and a second type of seal band material. In another aspect, the lid includes a plurality of surfaces at different topographies to reduce the thickness of the seal band between the topographic lid and the carrier. In yet another aspect the electronic package further includes a frame concentric with the chip. The lid is attached to the frame with a solder, epoxy or elastomer and placed on the chip with a thermal interface material. The seal band material is dispensed on the chip carrier and the frame is then moved towards the chip carrier allowing a minimum seal band thickness.
    Type: Application
    Filed: December 9, 2015
    Publication date: June 15, 2017
    Inventors: Sushumna Iruvanti, Shidong Li, Kamal K. Sikka, Hilton T. Toy, Jeffrey A. Zitz
  • Patent number: 9512291
    Abstract: A composite structure provides high thermal conductivity as a thermal interface structure with a relatively low filler loading. The composite structure is formed by dispersing nanoparticles in a matrix at a low filler loading, and controlled sintering of the composite structure to induce agglomeration of the nanoparticles into a connected percolating thermally conducting network structure within the matrix.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: December 6, 2016
    Assignees: INTERNATIONAL BUSINESS MACHINES CORPORATION, RENSSELAER POLYTECHNIC INSTITUTE
    Inventors: Theodorian Borca-Tasciuc, Sushumna Iruvanti, Fengyuan Lai, Kamyar Pashayi, Joel Plawsky, Hafez Raeisi-Fard
  • Publication number: 20150247019
    Abstract: A composite structure provides high thermal conductivity as a thermal interface structure with a relatively low filler loading. The composite structure is formed by dispersing nanoparticles in a matrix at a low filler loading, and controlled sintering of the composite structure to induce agglomeration of the nanoparticles into a connected percolating thermally conducting network structure within the matrix.
    Type: Application
    Filed: May 14, 2015
    Publication date: September 3, 2015
    Applicant: Rensselaer Polytechnic Institute
    Inventors: Theodorian Borca-Tasciuc, Sushumna Iruvanti, Fengyuan Lai, Kamyar Pashayi, Joel Plawsky, Hafez Raeisi-Fard
  • Patent number: 9045674
    Abstract: A composite structure provides high thermal conductivity as a thermal interface structure with a relatively low filler loading. The composite structure is formed by dispersing nanoparticles in a matrix at a low filler loading, and controlled sintering of the composite structure to induce agglomeration of the nanoparticles into a connected percolating thermally conducting network structure within the matrix.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: June 2, 2015
    Assignee: International Business Machines Corporation
    Inventors: Sushumna Iruvanti, Theodorian Borca-Tasciuc, Hafez Raeisi-Fard, Fengyuan Lai, Kamyar Pashayi, Joel Plawsky
  • Patent number: 8531025
    Abstract: A semiconductor module structure and a method of forming the semiconductor module structure are disclosed. The structure incorporates a die mounted on a substrate and covered by a lid. A thermal compound is disposed within a thermal gap between the die and the lid. A barrier around the periphery of the die extends between the lid and the substrate, contains the thermal compound, and flexes in response to expansion and contraction of both the substrate and the lid during cycling of the semiconductor module. More particularly, either the barrier is formed of a flexible material or has a flexible connection to the substrate and/or to the lid. The barrier effectively contains the thermal compound between the die and the lid and, thereby, provides acceptable and controlled coverage of the thermal compound over the die for heat removal.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: September 10, 2013
    Assignee: International Business Machines Corporation
    Inventors: David L. Edwards, Sushumna Iruvanti, Hilton T. Toy, Wei Zou
  • Patent number: 8455998
    Abstract: A method and a package for circuit chip package having a bent structure. The circuit chip package includes: a substrate having a first coefficient of thermal expansion (CTE); a circuit chip, having a second CTE, mounted onto the substrate; a metal foil disposed on the circuit chip in thermal contact with the chip; a metal lid having (i) a third CTE that is different from the first CTE and (ii) a bottom edge region, where the metal lid is disposed on the metal foil in thermal contact with the metal foil; and an adhesive layer along the bottom edge of the metal lid, cured at a first temperature, bonding the lid to the substrate, producing an assembly which, at a second temperature, is transformed to a bent circuit chip package.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: June 4, 2013
    Assignee: International Business Machines Corporation
    Inventors: Sushumna Iruvanti, Yves Martin, Theodore van Kessel, Xiaojin Wei
  • Patent number: 8232636
    Abstract: A frontside of a chip is bonded to a top surface of a chip carrier. Seal material is dispensed at a periphery of the top surface of the chip carrier. A solder TIM having a first side and a second side is provided. The first side of the TIM contacts a backside of the chip. A reflow is performed to melt the TIM. The second side of the TIM is bonded to a lid. The seal material is cured. The lid is attached to the top surface of the chip carrier. Backfill material is injected into a space between the top surface of the chip carrier and the lid. The backfill material abuts sides of the TIM. The backfill material is cured. TIM solder cracking and associated thermal degradation are mitigated.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: July 31, 2012
    Assignee: International Business Machines Corporation
    Inventors: James N Humenik, Sushumna Iruvanti, Richard Langlois, Hsichang Liu, Govindarajan Natarajan, Kamal K Sikka, Hilton T Toy, Jiantao Zheng, Gregg B Monjeau, Mark Kapfhammer
  • Publication number: 20120187332
    Abstract: A composite structure provides high thermal conductivity as a thermal interface structure with a relatively low filler loading. The composite structure is formed by dispersing nanoparticles in a matrix at a low filler loading, and controlled sintering of the composite structure to induce agglomeration of the nanoparticles into a connected percolating thermally conducting network structure within the matrix.
    Type: Application
    Filed: January 24, 2012
    Publication date: July 26, 2012
    Applicants: RENSSELAER POLYTECHNIC INSTITUTE, INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Sushumna Iruvanti, Theodorian Borca-Tasciuc, Hafez Raeisi-Fard, Fengyuan Lai, Kamyar Pashayi, Joel Plawsky